I just grabbed it twice, once through firefox and once through wget. Neither of those use download-manager tactics of automatic resuming and multiple connections to the server, but both worked just fine, and gave me ~330KB/s of throughput, not bad for a single connection. Using flashget (with multiple connections) I got around 1.2MB/s, which completed in 15 seconds - if the download had been bigger, I might have gotten closer to my maximum of 2MB/s.
The problem might very well not be a google's end, it could be traffic-shaping ISPs (or other ISP issues), it could be browser issues, etc.
Which browser do you use?